A tetra-substituted chrysene: orientation of multiple electrophilic substitution and use of a tetra-substituted chrysene as a blue emitter for OLEDs |
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Authors: | Ionkin Alex S Marshall William J Fish Brian M Bryman Lois M Wang Ying |
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Institution: | DuPont Central Research & Development, Experimental Station, Wilmington, Delaware 19880-500, USA. alex.s.ionkin@usa.dupont.com |
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Abstract: | The first tetra-substituted non-fused chrysene, 3,6,9,12-tetrakis(4-tert-butylphenyl)chrysene with blue electroluminescence at 450 nm, and with a radiance of 500 cd m(-2), was synthesized by a two-step procedure: direct bromination of chrysene in trimethyl phosphate, followed by palladium-catalyzed cross-coupling of tetrabromochrysene and tert-butylphenylboronic acid . |
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